Portable solar battery



FIG. 1 is a perspective view of a portable solar battery showing our new design;

FIG. 2 is a rear perspective view thereof;

FIG. 3 is a front elevation view thereof;

FIG. 4 is a rear elevation view thereof;

FIG. 5 is a top plan view thereof;

FIG. 6 is a bottom plan view thereof;

FIG. 7 is a right side view thereof; and,

FIG. 8 is a left side view thereof.

The broken lines shown in FIGS. 1–4 represent stitching. 

The ornamental design for a portable solar battery, as shown and described. 